National Building Museum
National Law Enforcement Officers Memorial
National Mall
National Museum of African Art
National Museum of American History
National Museum of Natural History
National Museum of Women in the Arts
National Portrait Gallery
National Shrine & Immaculate Conception
National Zoological Park
Navy Museum
The Old Post Office Pavilion
The Phillips Collection
Pope John Paul II Cultural Center
Smithsonian American Art Museum
Smithsonian Institute Information Center
Smithsonian National Postal Museum
St. Matthew's Cathedral
The Textile Museum
The Kreeger Museum
Tudor Place
U.S. Navy Memorial & Navy Heritage Center
United States Holocaust Memorial Museum
Vietnam Veterans Memorial
Washington Monument
Washington National Cathedral
Washington Performing Arts Society
White House

Tell them you saw their web site on allvacation.info